ZWO Ha 7nm 1.25" Narrowband Hydrogen-Alpha Filter

The ZWO H? 7nm 1.25"" Narrowband Filter isolates the hydrogen-alpha emission line at 656nm, making it ideal for capturing nebulae and other deep sky objects. Its 7nm bandwidth provides high contrast by blocking unwanted light pollution and skyglow, while maintaining excellent transmission at the H? line. This filter is essential for astrophotographers aiming to enhance fine details in emission nebulae using monochrome cameras.

• Filter Type: Narrowband Hydrogen-Alpha (H?)
• Wavelength: 656nm
• Bandwidth: 7nm
• Filter Size: 1.25-inch mounted
• Glass Thickness: 2mm
• Peak Transmission: >80%
• Surface Quality: 60/40 (scratch/dig)

• ZWO H? 7nm 1.25"" Filter
• Protective case